SNAX/HLS Configuration and Control Manual

Modifying the Message File (HLSMSGS)
Installing SNAX/HLS
104705 Tandem Computers Incorporated 3–7
Modifying Retry Action
Codes
Retry action codes vary from 0 to 3. An installation can change these codes to make
application programming easier.
For example, when SNAX/HLS returns a nonzero return code, an application
program can base its actions on the retry action codes (rather than the return code). To
prepare for this, the system programmer, in cooperation with the application designer,
would assign retry action codes corresponding to every possible action and modify the
HLSMSGS file accordingly.
A possible disadvantage of doing this is that the message file might change in new
releases of SNAX/HLS and might therefore require entering changes into a new
HLSMSGS file.
Format of HLSMSGS File HLSMSGS is an EDIT file in which each record is either a comment or an entry
(depending on what is in column 1).
Comment Records
A blank or asterisk (*) in column 1 signifies a comment.
Entry Records
An entry record begins as follows:
Column 1: A letter, identifying the kind of entry:
K—Internal events
S—SNA sense codes
R—Verb return codes
G—File-system error codes
Columns 2-5: A four-digit hexadecimal number identifying
the particular message
Column 6: Blank